package com.chen.regie.config;

import com.chen.regie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;


@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("开始静态资源映射......");
        registry.addResourceHandler("/backend/**").addResourceLocations(("classpath:/backend/"));
        registry.addResourceHandler("/front/**").addResourceLocations(("classpath:/front/"));
    }


    /**
     * 扩展mvc框架的消息转换器
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        //创建转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper((new JacksonObjectMapper()));
        //将上面的消息转换器对象追加到MVC框架的转换器集合中
        converters.add(0,messageConverter);
    }
}
